Recently, I have cleared 3-day ITIL foundation course. I am Post Graduate in Computer Science. Could you please help me about the interview question which can might ask by interview panel? (for a fresher).

Really i think depends on the type of position you are applying for will help to direct the types of questions you may receive. Some general ones that i recall we asked were:

What does ITIL stand for? (Believe it or not very valid question)

What is the purpose of having a CMDB?

What type of intereaction is needed between the Change and Release manager?

Just some example of very very general type questions. Unless its a dedicated position within a particular process disciplines, i'd imagine the questions to be very high level. More specific type question for example that i received during a Change Manager interview:

You have a remote site which supports their own systems and does not require resources from the home office. You are pushing the implementation of a standard Change Management process across all locations and offices. When speaking to this location they believe that because their system is independent of the home office and the necessary support is handled centrally at that location, that they do not need to follow this new Change Management process as it is just overhead and will slow down their day to day work. How do you respond and begin to get their buy-in?